Write the function of valves present in between atria and ventricles.

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Solution

Valves ensure that blood does not flow backwards when the ventricles contract, i.e. it ensures that the blood flows only in one direction.

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Similar questions

Q. Identify the correct option.
Statement 1: Blood from venacava and pulmonary veins enters the right and left atria respectively.
Statement 2: The aperture between the atria and the ventricles is closed by valves.

What prevents the backflow of blood inside the heart during contraction ?
(a) thick muscular walls of ventricles
(b) valves
(c) thin walls of atria
(d) all of the above

Question 18
What prevents backflow of blood inside the heart during contraction?

(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above

Q. Match valves to parts of the heart it connects. (RA - Right Atria; RV - Right Ventricle; LV - Left ventricle)

Q. (a) Mention any two components of blood.

(b) Trace the movement of oxygenated blood in the body.

(c) Write the function of valves present in between atria and ventricles.

(d) Write one structural difference between the composition of artery and veins.

OR

(a) Define excretion.

(b) Name the basic filtration unit present in the kidney.

(c) Draw excretory system in human beings and label the following organs of excretory system which perform the following functions :

(i) forms urine.

(ii) is a long tube which collects urine from kidney.

(iii) Store urine until it is passed out.

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